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federal noxious weed seed imperata cylindrica

State List – This map identifies those states that list this species on their invasive species list or law. For more information, visit

Other Common Names:
cogon grass, alang-alang, Japanese blood grass

Invasive Listing Sources

EDDMapS Distribution – This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit

Most Troublesome / Most Common Agricultural Weed List
This map identifies those states that consider this species either most troublesome or most common in at least one commodity. For more information, visit the MTMC project page.

Related Scientific Names:
Imperata arundinacea (L.) Beauv. (Synonym)

The precise management measures adopted for any plant invasion will depend upon factors such as the terrain, the cost and availability of labour, the severity of the infestation and the presence of other invasive species. Some components of an integrated management approach are introduced below.

Agnes Lusweti, National Museums of Kenya; Emily Wabuyele, National Museums of Kenya, Paul Ssegawa, Makerere University; John Mauremootoo, BioNET-INTERNATIONAL Secretariat – UK.

IRRI/NRI (1996). Imperata Management for Smallholders. Polembang, Indonesia: Indonesian Rubber Research Institute, and Chatham, UK: Natural Resources Institute.

Dickens, R. and Moore, G.M. (1974). Effects of light, temperature, KNO3, and storage on germination of cogon grass. Agronomy Journal 66: 187-188.

Imperata cylindrica is a prolific seed producer with one plant capable of producing up to 3000 seeds. These are dispersed by wind over long distances. It also spreads by rhizomes (root-like stems) which can be transported by tilling equipment and in soil transport.